Coil forming drum



June 27, 1944.. F. l.. WETTENGEL COIL FORMING DRUM 5 Sheets-Sheet lFiled Oct. 9, 1940 NNN mmm M N Il NN INVENTOR. ZWMWMM ATTORNEYS F. L.WETTENGEL COIL FORMING DRUM June 27, 1944.

June 27, 1944. F. L. WETTENGEL COIL FORMING DRUM Fil'ed 0012. 9, 1940 5Sheets-Sheet 5 m? @E mm. v. S1 m%\ n. N

m ENQ ATTORNEY 5 June 27, 1944, F. 1 WETTENGEI.

COIL FORMING DRUM,

l Filed oet. 9, 1940 5 Sheets-Sheet 4 mm. mn. mm.

INVENTOR.

ATTORNEYS S'IIOD .U10

QJmTm WM-tmm June 27, 1944.

FIGA@ aos zoe `zoo . F. L. WETTENGEL -con. FORMING DRUM 5 Sheefs-Sheety5 Filed Oct. 9, 1940 2' lNvENToR BY y AORNEYS Patented June 27, 1944UNIT-ED STATES PATENT OFFICE 2,352,580 con. FonMxNG DRUM Frank L.wetngei, Pittsburgh, ra.

Application October 9, 1940, Serial No. 360,479

3': claims. (cl. 242-78) This invention relates to improved means forforming coils of strip metal, particularly strips of magnetic iron orsteel in conjunction with cold reducing mills or any other processingequipment requiring the coiling of the strip.

This invention embodies the economic coiling of all kinds of strip,particularly steel strip, after the various processings through which itpasses especially where the strip is coiled under tension beyond theelastic limit of the steel.

This coiling is done on various forms of cylindrical drums, viz; soliddrums andcollapsibleexpanding drums. The collapsible expanding type ofdrums which necessarily are of the overhung or cantilever type arepreferable because when the drum is collapsed the coil can be removed orstripped bodily, longitudinally with the axis of the drum.

Most of these coliler drums consist of a long shaft, the rearapproximate half being provided with the necessary driving gears and theshaft is mounted in bearings of a drive frame necessary to rotate thedrum. The front or overhung portion ofthe shaft carries the drum whichusually consists of several segments hinged to each other, forming acylindrical drum which is longitudinally, rotatably mounted on saidoverhung shaft.

VThe segments are expanded and collapsed by various means such aswedges, rollers, toggles and cams formed on portions of the segments andon theshaft inside the drum` segments while the collapsing isaccomplished with springs.

It is advantageous when coiling thin material to keep the drum as smallin diameter as possible so the thin limber inside convolutions willretain their cylindrical shape and not collapse filling andslipping outsideways from the hollow center of the coil thus preventing mounting thecoil for future processing.

It is obvious especially in the small diameter drums that due to thespace occuped-bythese many roller expanding parts that the cam shapedshaft inside the drum is smallest and weakest at the end of the segmentsnear the drive .where it should be the strongest.

Where rollers and cams are used to expand the segments it is obviousthere is only a line contact between the various parts and this linecontact is only effective about half f the length of the drum due to thenecessity of holding the rollers, etc., in place with bearings, -cagesand other devices and no material has been found that will withstandthis line contactl crushing effect of the larger coils.

In this type of drum the segments are held expanded position by therollers passing the ridge of the cam and when collapsed it happens v itsoverhungend and attaining the largest diameter at its supporting bearingisa distinct advantage in view of the heavy tension it must f exert onthe strip as well as sustain the weight of a coil Weighing 25,000 poundsor more.

While the foregoing describes very briefly a part of the coiling art andsome coiling equipment with the diillculties encountered, it will be lobvious to those skilled in the art that there are numerous deviationsfrom the above.

With the object of eliminating as many of the coiling difficulties aspossible some of which are outlined above, I have devised a new designof coiling drum of the collapsible-expanding type with its necessaryauxiliary equipment, and I have adapted to this type of drum as anadditional feature, the use of embedded electromagnet coils to magnetizethe entire drum surf-ace which will attract the strip end which becomesattached to the revolving drum and is carried around it for the firstconvolution. n

Some of the other objects of this invention are lio--- Provide a newdesign of coiling drum of the overhung or cantilever type wherein thesegments upon longitudinal movement are expanded and collapsed on andbetween inclined surfaces integral with the rotating shaft.

Provide a drum, without rollers or cams, in which the crushing eect ofthe coil on the segments is distributed over large surfaces of theYshaft instead of the short line contacts of the rollers and cams.

Provide a. drum in which-a larger diameter rotating shaft replaces,roller expanding mechanisms with the shaft diameter progressivelyincreasing from its overhung end toward its sup-` porting bearing wherethe bending moment is the greatest.

Provide a drum whose shaft diameter is larger therefore stronger for aminimum diameter of drum than is possible with the present designs.

thus being capable of producing, without bending, a coiling tension insteel strip beyond the elastic limit of the strip with a smallerdiameter drum.

Provide hydraulic or screw and nut mechanism to produce longitudinalmovement of the drum segments on the rotating overhung shaft which willpositively collapse or expand the drum.

Provide rotating clutching means to operate the nut on the screw whichwill collapse, expand or hold the drum in any desired locked position,and at any desired speed, andby limit switch mechanism will positivelyand completely disconnect the rotating means from the nut when the drumbecomes completely collapsed or completely expanded.

Provide current supply switch, telescoping conductors and collectorrings for energizing electro-magnetic coils embedded in the drumsegments which are arranged so the magnetic poles of the segments comein direct contact with and produce greater attraction for the strip, theend of which will be attracted and attached to the magnetized segments,thus adhering to the drum and be wound around its surface as it revolvesthus forming the first convolution of the coil.

Provide coiling equipment that is simple of design; will have thedesired very sturdy construction, be economical to manufacture, install,maintain and operate and also embodies other valuable advantages andnovel features which will be apparent from the following detaildescription taken in conjunction with the accompanying drawings whereinlike numerals represent corresponding parts in the various figures. Tothe foregoing objects and to others which may hereinafter appear, theinvention consists of the novel construction, combination andarrangement of parts as will be more specifically referred to andillustrated in the accompanying drawings wherein are shown embodimentsof the invention, but it is to be understood that changes, variationsand modifications may be resorted to which fall within the scope of theinvention as claimed.

In the drawings:

Figure 1 is a longitudinal vertical section of a complete coiling unitwith a magnetic coiling drum hydraulically collapsed and expanded andconstructed in accordance with the features of the :present invention.

Figure 2 is an enlarged longitudinal section on the line 2-2 of Figure 6showing the magnetic collapsible-expanding coiling drum.

Figure 3 is an enlarged section through the extendible connector contactfor the electro-magnetic coils.

Figure 4 is a longitudinal vertical section of a motor operated,magnetic clutch connected, collapsible-expanding vmechanism with itsschematic wiring control diagram.

Figure 5 is a longitudinal vertical section of another form of a motoroperated, friction clutch connected, collapsible-expanding mechanism,with its schematic wiring and piping control dlagram.

Figure 5A is a fragmentary sectional view of the solenoid operated valvein another position.

Figure 6 is a transverse vertical cross section of the magnetic,collapsible-expanding coiling drum taken on the line 5 6, Figure 2.

Figure 'l is a transverse vertical cross section of the magnetic,collapsible-expanding coiling drum taken on the line 1-1, Figure 2.

' Figure 8 is a transverse vertical cross section ci. thecollapsible-expanding mechanism taken on the line 8-8, Figure4 andFigure 5.

Figure 9 is a transverse vertical cross section of thecollapsible-expanding mechanism taken on the line 8 8, Figure 4 andFigure 5.

Figure 10 is a fragmentary view of the telescopic joint between thecollapsible drum segments. looking radially toward the center of thedrum, the arch plates being removed. Y

Figure 10A vis a view similar to Figure 10 but showing a dovetal jointbetween the segments.

In the embodiments of this invention herein illustrated in the variousfigures, there is first provided in Figure l, a magneticcollapsible-expanding cylindrical coiling drum consisting of a hollowcentral driving shaft I, supported in the manner of a cantilever by acombined radial and thrust bearing 2, on the rear end pf the shaft and aparallel bearing 3, near the longitudinal center of the shaft with theoverhung end of the shaft forming the core of the drum. In thesespecifications the expression front" or front end means the end at theright hand of illustrating Figures 1-2-4-5 and conversely "rear or rearend" means the left hand end.

The bearings are mounted or carried by a drive frame or hou-sing 4, madein suitable sections for assembling and dismantling. A drive gear 5 iskeyed to the shaft I, and meshes with a pinion 6, carried by shaft 1,which is rotatable in bearings 8. The bearings 8 are held by retainers9,

and the shaft 1 is connected to a motor I0 by coupling I I. A brake I2,spring set and magnetic released in series with the motor, arrests andprevents rotation of the shaft 1 when motor I0 is not in operation.Outer races of bearing 2, also of bearing 3, are held in the drive frame4 by retainers I3 and Il, respectively. The single reduction driveillustrated and described above is only a typical arrangement. Doublereductions and other arrangements of motor and gears are equallyadaptable for rotating the shaft and drum.

The coiling drum proper is shown in larger scale in Figures 2, 3, 6, 7and 10. The drive shaftdrum core I is the foundation around which thecollapsible-expanding cylindrical drum to be hereinafter described andconsisting of segments together with the necessary collapsing-expandingdiscs, rings, etc., are built, all of which will first be describedwithout the magnetic feature. 'I'he drive shaft-drum core I is a hollowshaft provided outwardly of the anti-friction bearing 3 with a pluralityof spaced apart frusta-conical surfaces of which I5 is the innermost andlargest in diameter, IB is the intermediate surface and smaller indiameter than surface I5 and I1 is the outermost and is smaller indiameter than surface I6. The shaft I is formed with a stud I8 at itsouter end which serves to support and keep the various drum membersconcentric.

The outer periphery of the cylindrical drum is formed of a plurality ofsegments and in the present instance with three segments I9, whoseoutside diameters correspond to the expanded drum diameter and whoseinside diameters when A collapsed are somewhat larger than the shaftdrum core I. On theinternal surface of these segments are providedinternal frusto-conical surfaces I5, IG and I1* co-related when thesegments are expanded with surfaces I5-I6 and I1, respectively, on theshaft 'drum core. The rear ends of Athese gments are provided with anexternal frusto-conical surface 28 and the inasoa'sso l 3 all or themlongitudinally forward. The proicctternal diameter 2i is a continuationof frustaconical surface I5* but slightly larger.

At the rear end of the segments is provided a retaining collar 22 xed tothe shaft drum core I asbyakeyorthe like andrecessedasat 22* to providefor the longitudinal movement of the segments I3. The collar 22 is alsoformed with a sides of the bearing 3 and position and retain the innerrace of the bearing 3 in place.

The front ends of the segments I9 are provided with projecting tongues26 whose shape are truste-conical each of whose width is only about halfof the segment width. On the outer end of the shaft drum core I isattached a collapsing disc 21 (partly broken away in Figure 6 to showthe tongue 26 more clearly) formed with segmental slots 28 slightlywider than the projecting tongues 26 and the large diameter surface ofthe slot corresponds with the frusto-conical surface of the projectingtongues 26. All of these external and internal frusta-conical surfaceshave the same angle with relation to the axis of the drum practicallyparallel movement of the segments I9.

The front ends of the segments I9 are provided with .a right angularextension 29 which also forms an internal flange forv collapsing thesegments I3. The outside diameter of this extension 23 is concentricwith the expanded diameter of the drum and provides a stop to center thethe disc 30 is formed with a ange 3l which engages a flange 3la at theouter end of each segment to limit expansion of the segments. Attachedto the rear face of the disc 30 is a segment collapsing ring 32 having aflange y32a engageable with the extensions 29 on the segments I3. Keys33 are provided between the surfaces I5, I5; I6, |63; and I1 and I1a toprevent circumferential rotation of the segments I9 on the shaft drumcore I sbut provide for longitudinal movement of the segments relativeto the coreor shaft I. y

Shaft-drum core I; inner race of bearing 3; spacer sleeves 24 and'25;retaining collar 2'2; segment collapsing ring 23; keys 33 and segmentcollapsing disc 21 are all fixed as by screws, keys. welding orotherwise to each other so as to form one unitary structure. Themovement of each segment `I 6 from avcollapsed to an expanded positionis indicated by the numeral 34. Expanding disc 3U and collapsing ring 32are fixed together as by screws or other fastening means 3|)b and areattached to rod 35 by fastening means 35a. Rod 35 is slidable in thebase of the drive shaft bore.

, like edge zus.

formed on its supporting segment, and when the ing tongues 26 'whichengage in the slots 26 of the collapsing disc 21, and the rear endfrusta-conical surface 26 which engages collapsingring 23, will effectinward movement of the segments i6 to a collapsed position coincidentwith the outward longitudinal movement of the segments.

To expand the drum, the longitudinal movement of the rod 35 is reversed.Thesegmentswill move rearwardly and outwardly on frusto-conical surfacesI5, I6 and I1, expanding the segments until segment extension 26 engagesthe rim extension 3I of expanding disc 30, and the voutside segmentsurface engages cylindrical surface" 26 'of the collapsing ring 23 -bothof which limit the expansion and provide a perfect concentriccylindrical drum. l

'To provide for the shorter periphery when the drum is collapsed,agtelescopic joint is provided at the edges of the segments which aremortised with parallel tongue I9 and groove I3b as shown in Figure l0,or dovetail as shown at I9 and I6*i in Figure 10A. The relativepositions ofthe edges of the segments when they are expanded are moreclearly shown in Figures 10 and 10A.

In order to provide a continuous cylindrical surface these grooves andgaps between the segments are covered by arch plates 201 of springymaterial (not shown in Figure 10 or 10A but similar to that shown at201, Figure 7) curved to conform with the cylindrical surface of thedrum and having one edge rigidly` attached to one segment and made ofsuch width that it spans thejoint gaps and slidingly engages on theadjoining segment but is unattached and hasr a beveled wedge- Acorresponding bevel 203'* is drum is collapsed, the periphery shortensand the bevel on the unattached end of the arch plate follows thecorrelated bevel 208 on the segment and telescopes along its surface.`

Longitudinal -movement of rod 35 to effect collapsing and expanding ofthe drum is produced either hydraulically as shown in Figure 1 or byscrew and nut which will be described later. Referring to Figure 1, ahydraulic rotating type cylinder 36 is screwed or otherwise rigidlyattached to the rear end of the driving shaft I so its cylindrical axiscoincides with the longitudinal axis of the shaft, drum and rod all ofwhich are identical. A sleeve 31 is provided between the cylinder andthe inner race of bearing 2 rigidly clamping it on shaft i. As thisbearing 2 is a combined radial and thrust bearing, it arrests anylongitudinal movement of the shaft and drum, with any slight expansionprovided for by roller Ihearing 3.

Cylinder 36 is provided with the .usual stulng box bush 3B, packing 39,gland III) and piston 4I.

y rigidly attached to rod 35 which becomes the pis- The operation ofcontracting the drum which in Figures '1 and 2 is shown expanded is asfolton rod. Cylinder head 42 has attached the spindle r rotating plug 43of the rotating joint connection through which liquid pressure issupplied to the cylinder. The longitudinal axis of this plug coincideswith the axis of the cylinder 36 and drive shaft I and therefore thereis no radial or longitudinal motion, only rotary. The body 44 of therotary joint is held on the plug 43 by washer 45 with its necessaryscrews and cap 46 encloses these parts.

Body 44 has annular ports 41,48 and 49. Annular port 41 coincides withport 50 in plug 43 and leads through the plug and the cylinder head 42and through the side wall of cylinder 36 to the u te the rear end of thecylinder. Annuler port 41 is connected to a four way valve 52 by pipe 53and annular port 48 is connected by pipe 54.

Pipe 55 connects to the body of the rotating joint and drains anyleakage which gathers in handle 53 of the four way valve 52 is admittingliquid pressure to the front end of cylinder 36 and exhausting it fromthe rear end; in position 08 the liquid is locked in both ends -of thecylinder and holds the drum in whatever expanded or collapsed' positionit is when the valve 1s turned te this position, in position 8| liquidpressure is admitted to the rear end of cylinder 35 and the front end isexhausting thereby collapsing the drum.

, Some engineers object to liquid pressure for operating equipment Ihave devised a motor connected, collapsing-expanding mechanism as and tomeet this objection operated, magnetic 4clutch shown in Figure 4 and asimilar arrangement except that the connection is made by a frictionclutch as shown in Figure 5 with sections shown in Figures 8 and 9.

In Figures 4 and 5, the radial and thrust bearing 2, retainer I3 andpartly shown drive frame 4, drive gear 5, and the balance of the drive(not shown) is the same as described in connection with Figure 1. Thedrive shaft-drum core I and rod 35 are identically the same from radialandL thrust bearing 2 forwani to the end of the ceiling drum but to therear of this bearing the shaft l and rod 35 are entirely differentembodying a screw thread 10 on rod 35 and nut 1|.

The sole object of this mechanism is to produce, independent of shaft Ia power rotating means for screwing on and unscrewing of nut 1| f onthread 10 of rod 35, which can be perfectly controlled and will producepositive longitudinal movement in either direction of rod 35 when it ofwhich the gear box 83 is to reduce speed and increase power. The motorproper 84 which is preferably series wound has keyed on its armatureshaft the brake drum 85 of a series brake which applies the brake shoes80 with` a spring and releases them by a magnet 81. Mounted on clutchmagnet eld member and hub 80 are two annular collector rings 88 and 88insulated from the hub by sleeve 30.

Ink this description the word insulation or a derivative thereof willmean a non-conductor oi' electricity. Collector ring 88 is connectedby'a conductor 3| and ring 89 by conductor 32 to clutch magnetizing coil8|, all properly insulated. Brushes for these rings are identified by 33and 34, respectively.

For arresting movement at the proper instant, I have devised a speciallimit switch for which there are provided two annular collector rings 85and 3B mounted on nut 1| and insulated therefrom by sleeve 31. Alsomounted on this sleeve is contact finger 98 connected to ring 96alsocontact flnger 99 connected to ring 95 by conductor |00. Brushes forrings 85 and 95 are indicated by |0| and |02, respectively. As severalrevolutions of nut 1| on screw thread 10 will be nec essary to securethe desired longitudinal movement of rod 35, and to prevent the contactiin- -gers 98 and 93 making connection after one revo.-

lution, there is provided a floating contact with wedge shaped ends |03carried by insulation supis at rest or rotating in either direction,also to arrest this movement at exactly the correctinstant; the partsbeing arranged so the stress caused by a coil wound on the drum will betaken directly by shaft Yrod preferably in tension and nut 1|, also sothe nut rotating means will be completely disconnected from the nut andcan remain inoperative while the coil is being formed.

In this mechanism the end of rod 35 extends of shaft the extension beingthreaded as at 10 and having a sleeve-like nut 1| with a correspondingthread, the outer end of the nut 1| abutting the rear end of shaft I.The outer end of the nut is formed with a flange 1|a and cellar 12encircling the end of and carried by shaft the end of which is groovedtoreceive a split retaining collar 13 and a deeper groove for thebifurcated collar 14. On the opposite end of the nut 1| vis screwed orotherwise attached the armature hub 15, armature spring platel andmagnet armature member 11 cf a beyond the end magnetic' clutch. Hub 15is prevented from roport |04 attached to floating or pilot nut |85having a width of several times the movement desired in rod 35.

The outside diameter of nut flange 1 |n and collar 12 are somewhatlarger than the outside diameter' of retaining collar 13 and is providedwith a thread |05 the same pitch and number of threads per inch asthread 10 on rod 35. The inside diameter of pilot nut |05 has acorresponding thread and the outside diameter 'has mounted thereon aninsulation sleeve |01 and wide. face annularY collector ring |08, whichis connected to floating contact |03 by a conductor I08and is providedwith brush H0.

Pilot nut |05 has an integral projecting pawl |I| considerably longerthan the movement desired in rod 35 and is used to permit longitudinalmovement but to restrain circumferential rotation of the pilot nut withrelation to shaft I, which is accomplished by the pawl I projectingthrough the bifurcation 14* on collar 14 which is made in halves andprevented from rotating on shaft by dowel pin ||2.

A sleeve ||3 between the bifurcated collar14 and inner race of radialand thrust bearing 2 rigidly clamps the inner race n shaft arresting anylongitudinal movement of the equipment. The longitudinal axes of allrotating parts are in line and they are therefore concentric with eachother. Rod 35 has an integral key ||4 which slides in keyway ||5 in thehollow of shaft I and provides for limited longitudinal movement butprevents rotative motion with relation to shaft I.

Shaft I, inner race of bearing 2, sleeve ||3,.bi furcated collar 14 anddowel ||2 are attached by various means to each other thereby forming anintegral unit which isadapted to rotateas such. Nut 1|, 12, retainingcollar 13, hub`15, spring plate 15, magnet armature 11, key 18,collector rings and 96, insulation sleeve 31, contact ngers 98 and 38,also connector |00, are attached to each other forming an integral unitand provides for rotation in either direction regardless 750 of whethershaft is rotating or at rest.`

ments, etc., forming the circuits from the main switch 8|. The gearmotor circuit starting at switch terminal |82 passes through |84,L, |2|,RI, R2, R8, R4, R5, |85, |88, 81, ries brake releasing it', |31, seriesfield, |88, E, |25, F, |48, armature, |88, C, |28, B, |4|, blowoutcoils, |42, |48, |28, |28, |44 to |88 main switch terminal causingclockwise rotation of motor and magnet field member of magnetic clutch.

The circuit for this clutch is the same as before starting at conductor|85 where it joins .|88 through |45, 84, 88, 82, 8|, 8|, 88, 88, |48,|48, |28, |28, |44 to switch terminal |88 completing the circuit, andenergizing the magnetic clutch and connecting it with its amature 11 andnut 1| with gear motor withv nut 1| through the friction clutch.

. Pressure for operating cylinder |82 is supplied through pipes |88 and|84 by a solenoid controlled four waypiston valve. 'I'he body of thevalve is designated |85 and the slidable valve is designated |88. Thevalve |88 is moved longitudinally of the body |85 by solenoids |81 and|88, each solenoid when energized. pulling the valve |85in onedirection. The fiuid pressure for the cylinder |82 is suppliedthroughpipe |88 and its attachments as previously described except f that therotation is in the opposite direction or clockwise, moving rod 85forward or away from the gearmotor 84 which collapses4 the coiling drum.

Screw rod 85 and pilot nut |85 with their ab tachments start thecollapsing operation from the position shown in Figure 5 and complete itwhen thepositions shown in Figure 4 are reached, when the circuits mustbe broken. This is e'ected by current passing through the limit switchcircuit from resistance |21 to conductor |41, Ill, |88, |88, |88, 88,'|88, 85, |8|, |5|, SI, |24, S2, |48, |88, |58, |44, to switch terminal|88. This closes the limit switch circuit and energizes electro-magnet|88 of magnetic contactor |28 (normally closed), which opens thecontacts |28 and breaks the main line circuit disconnecting theelectrical equipment. The brake spring thereafter applies the .brake,all as described with the counterclockwise rotation.

Figure 5 also shows a collapsing expanding mechanism in which theconnection' between the gearmotor and nut 1| is effected 'by a frictiontype of clutch. In this arrangement the shaft rod 85, pilot nut |85 anddrive frame 4 with all their attached parts are identically the same as.Figure 4. Nut 1| and all its attachments are the same except thatarmature hub 15, spring plate 18 and magnet armature member 11 arereplaced by the cup-shaped clutch member |18 of a -cone type frictionclutch with hub cast integral and screwed or otherwise attached to nut1| with key 18 preventing rotation on nut 1|.

The gearmotor unit is the same except that it has a longer' shaft |1| toprovide a mount for a friction clutch cone member |12 with frictionlining '|8. A hub |14 is carried by the clutch member |12 and isprovided with a groove |14* for a trunnionedshifting yoke |15. Hub |14has a sliding fiton shaft |1| being splined on this shaft to preventrotation of the hub on the shaft.

exhausts through pipe |88. Pressure port |8| communicates with pipe |88and'pressure port |82 communicates with pipe |84 and exhaust port |88communicates with the exhaust pipe |88.

The control for the gearmotor and series brake are identically thesameas shown in Figure 4 with the magnetic clutch circuit omitted. Forcontrolling the solenoidsV on the four way valve and limit switchcircuit, a slight change is necessary necessitating the addition of twomovable contact segments |28A and- |28A, also fixed contact finger X.Inserted in the limit switch circuit is a magnetic contactor |52 whichconstitutes a switch whose contacts |52A are normally open but areclosed when a current passes through its electro-magnet |58, one end ofwhich is -connected to contact finger S2 and the other end to conductor|54 connecting to the electro-magno |38 of magnetic contactor |28.

Conductor |55 connects contacts |52A of the magnetic contactor |52 withconductor .|-l4. Solenoid |81 is connected to conductor |85 by conductor|58 and to contact linger X by conductor |51. Solenoid |88 is connectedto conductor |41 by conductor |58 and by |58 to contacts |52A ofmagnetic contactor |52; In Figure 5, the mechanism is shown at rest inthe position it occupies immediately after the coiling drum has beenexpanded with the friction clutch disconnected and the drum of thecontroller in its neutralposition. To collapsev the coiling drum rodmust move forward or away from gear motor 84. Thread 18 being righthand, clockwise Arotation whenlooking from the 'front end of nut 1| willproduce the desired movement in rod 85. Y f

The circuits of the control and operation of the other mechanism is asfollows: the electric supply passes through main switch |8| to terminals|82 and |88 but no current isiiowing as there are no completed circuits.'I'he controller drum is now ,rotated so the clockwise movable segments|24, |2|, |25, |28 and |28A come in contact with their respectivecontact fingers which completes the circuits land current flows fromswitch terminal |82 through conductor |84 to contactfinger L, segmentsI2 RI and through the starting resistance |21.

Continued rotation of the controller drum successivelyeliminatesresistance |21 as the movable segments |2i, contact fingers R2, R8, R4and R5 when full current passes through the circuit of conductor ,I 85to magnet 81 of series brake releasing it, conductor |81, series field,conductor |88 to finger E, segment |25, finger F, conductor |48,armature, conductor |88, finger C, segment |28, finger B, conductor .I4blow out coils, conductor |42 to contacts |28 to magnetic contactor |28(normally closed), conductor |44 to terminal |88' of switch |3|,completing the circuit and rotating gear motor clockwise.

The circuit for valve solenoid |81 is from conductor |35 throughconductor |58 through 'the solenoid |81, conductor |51 to linger X,segments .|28A to |28 to finger B connecting to thel main circuitthrough conductor |4| and energizing lsolenoid |81 which pulls thepiston valve from the position shown at |86 to position shown at la inFigure 5A.

Fluid pressure from supply pipe |89 now flows through the right handannular groove |881 in valve piston in position |86* to pressure port|92 to pipe |84 and cylinder |82 pushing piston |8| and rod |88connected at |19 to bifurcated lever 18 until they arrive at positionI18A and I 19A shown in dotted lines. 'This shifts the friction clutchcone member |12 in contactwith its cup member |18, imparting to it andnut |1| the same rotary motion as that produced by gearmotor which isclockwise as desired, lmovingrod'35 forward and collapsing the coilingdrum, and at the same time moving pilot nut |85 with its attachments andfloating contact |83 in the same longitudinal direction.

The opposite or stuillng box end of cylinder |32 exhausts through pipe|83 pressure port |9| left hand annular port |88 of. piston valve inposition |88a to exhaust port |93 and to exhaust pipe |98. Clockwiserotation ofnut 1| and forward longitudinal movement of rod 35 and pilotnut |85 continue until floating contact |83 engages contact iinger 99(as shown in Figure 4) Vof the limit switch circuit.t This circuit is asfollows: from resistance |21 to conductor |41 to brush ||8, collector.ring |88, conductor |89, floating contact |83, finger 99,.conductor|89, ring 195, brush .|8I, conductor |5| to finger SI. segments |24,nger S2, to electromagnet |53 oi.' magnetic contactor |52 (normallyopen), conductor-|54 to electromagnet |98 of magnetic contactor |28,(normally closed), to conductor |58,

conductor |44, to switch terminal |33,'which rent energizedthe.electromaznet |53 of magnetic contactor |52, closing the contacts|52A (normally open) whichcompleted the circuit .for solenoid |88beginning at conductor |41 throuch ance |21 as previously described. Theflow of lcurrent for counterclockwise rotation is through the followingsegments, fingers, conductors; etc., forming the circuits from the mainswitch |3I. The gearmotor circuit starting at switch terminal |32 passesthrough |34, L, |2| R|, R2, R3, R4, R5, |35 magnet 81 of series brakereleasing it, |31, series field, |88, E, |22 D, C, I39'armature, |48, A,|23, B, |4| blowout coils |42, |28, |29, |44, |33 switch terminalcompleting the circuit and producing counterclockwise rotation.

conductor |58 through solenoid |88 conductor |59 to contacts |52A whichare now closed. conductor |55. conductor |54 completing the circuitthrough |38, |58. |44 to switch terminal |33. This energizes solenoid|88 and pulls valve niston from position |86a to position |85 whenpressure from supply` pipe |89 flows through the left hand annulargroove in valve piston .|86 to pressure port |9| through pipe |93 intocylinder |82 thus moving piston IBI, piston rod |88, lever connection|19 and lever |19 from position shown Til engage their respectivecontact fingers and con- I troller rotation is continued eliminatingresist- The lc ircuit for solenoid |81 branches off of conductor |35through |59, |81, |51, X, |23A, |23, B, |4|,'blow out coils, |42, |28,|29, |44, |33 switch terminal completing the circuit and operatingsolenoid |81, valve piston |88, cylinder |82, etc., exactly the sameasdescribed for clockwise rotation.

The limit switch circuit starts from resistance |21 to |41, ||8, |88,|89, |83, 98, 96, |82, |48, S3,

terminal completing the limit switch circuit and closing the circuit forsolenoid |88, through conductors |58, |88, |59, contacts |52A nowclosed,"

minal. This again operates solenoid |88, valve piston |88, cylinder |82etc., exactly the same as described for clockwise rotation.

I have described and illustrated the simplest type of friction clutch,but the collapsing expanding mechanism and control as described isequally adaptable for use with any type of friction clutch, single ormultiple disc, expanding or contracting band, gear or jaw clutches andany other type of rotary drive may be substituted for the gearmotor.

To simplify the descriptionl of this collapsingconvolutions of thecoil.' and it is, therefore.-

belt-wrapper` necessary to provide the familiar to accomplish thisresult.

A belt-wrapper is an endless belt threaded'over stationary andhingedrollers carried in a 'frame mounted on a carriage movabletransversely with relation to the ceiling drum axis. To form the firstfew coil convolutions on the empty coller drum the beit-Wrapper isadvanced toward the drum, the belt rst engaging the drum then the hingedroller swings up so approximately three quarters of the drum istightlyencircled by the belt which, due to the friction against thedrum, is traveling at the same surface sneed.

The strip is led in through the one-quarter open space not encircled bythe belt and fed between it and the rotating drum, which carries theleading end of the strip around the tightly encircled portion of thedrum, and under the oncoming strip-thus forming the rst convolution.'

After several convolutions are formed the beltwrapper is withdrawn tomake room for the.

progressively increasing coil. Patent 2,172.6167

clearly illustrates this belt-Wrapper device as now used which is amodification of Patent 1,230.750.

It is obvious that several operations are necessary to engageand'disengage the coiling drum and belt-wrapper. which is large andcumbersome occupying a large amount yof floor space, and it is alsoexpensive. To eliminate the cost of this belt-wrapper with. its severalnecessary operations, also the floor obstruction which it cause/s, Ivhave devised means consisting of electromagnets imbedded in the coilingdrum segments and 'arranged to attach by magnetic attraction the leadingend of the stripto the coiler drum, carrying it around the drum as itrevolves, thus forming the first convolution of the coil.

The arrangement' of the electro-magnetic coils in the drum segments ofthe collapsing-expanding drum is shown most clearlyin Figures 2, 6, 'Iandv 10. The segments, which are made of highly magnetizable material.are provided on their outer surface with an even number of longitudinalslots or grooves 200. with arcuate (or rectangular) ends 20| connectingeach pair. The

must be protected from damage, and the groovesas well as the telescopicjoint between the seg-- ments must be arched over to present a smoothvcontinuous cylindrical surface so the highly iinished strip surface isnot damaged, which would impair its commercial value.

This is accomplished with arch plates 201 covering the grooves 200 alsothe joints between the segments. Arch plates 201 Figure 'I (removed inFigure are of non-magnetic springy material curved to conform with thecylindrical surface of the drum and having one edge rigidly attached toone of the segments and arching over one or more of the grooves 200 inwhich the electromagnetic coils 202 are embedded, thus protecting them.The arch plate 201 is of such width that it also spans the joint gapsbetween adjacent segments and is supported on the adjoining segment, butis not attached to it, having a beveled wedge-like edge 200 with acorrelated bevel 200'* on the supporting segment.

The balance of the longitudinal grooves 200 are dovetailed at theirouter edges and nonmagnetic arch strips 209 are forced longitudinallyinto these dovetails. The arcuate (or rectangular) end grooves 20|. arecovered by non-magnetic plates or sleeve forming segments 2|0 at thefront end and 2|| at .the rear end divided into thesame number ofsegments asthe drum and having a width great enough to cover the arcuateend grooves 20| and a part of its longitudinal connecting groove 200.The longitudinal edges of plates 2|0 and 2|| are beveled at 200 and theyform a continuation of the unattached edge of arch plate 201.

I'he balance of sleeve forming segments 2|0 and 2|| are firmly attachedto the drum segments I9, and the attached end is beveled the same as andforms a continuation of the bevel 200* on the drum segment. .The lengthof arch plate 201 and arch strip 20! will extend longitudinally fromsleeves 2|0 to sleeves 2||. When the drumis collapsed the peripheryshortens and the bevel 208 on the unattached end of the arch plates 201and sleeve segments 2|0 and 2|| follows the correlated bevel 208'L onthe drum segments i9, and bevel continuation on the attached ends ofsleeve segments 2|0 and 2li and teleassasso scopes along the drumsurfacareducing the drum diameter and permitting removal of the coil.

Figure 3 is provided consisting of an extending telescoping tubularconductor nger 2|: sliding a segment and they are so disposed inretainingv in a conductor sleeve 2|0 and both provided with shoulders2|2 and 2li'I respectively to prevent dis-assembly.

Conductor sleeve 2|! is provided with an outer annular collar 2H" nearits longitudinal center to position itself against insulating collaredbush. ings 2li and 2li all of which are clamped and held rigidly inVretaining collar 22 by a nut 2|. threaded into collar 22. The rear endof sleeve 2|3 is internally threaded for conductor plug 2|1 which isalso the seat for compression spring 2|0 which tends to extend finger 2I 2 and always keep it in contact with terminal 205. Two of theseextendible contacts are provided for each drum collar 22 that theirlongitudinal center line coincides with the center line of terminalcontact 205, both of which are disposed at the same angle with relationto the coiling drum axis as the frusto-conical surfaces.

It is obvious that the short longitudinal movement required to collapsethe drum segments Il will not change the center line coincidence ofiinger 2|2 and terminal 205, and they will always be in contact.Attached to the rear surface of retaining collar 22 is a disk ofinsulating material 2|! (Figure 2) on which are mounted two annularcollector rings 220 and 22|.

Conductor 222 connects collector ring 22| to conductor plug 2 1 ofextendible contact connectlng with one of the terminals 205 of each drumsegment. The other terminals of each drum segment connect in a similarmanner (not shown) to collector ring 220. Attached to the drive frame 4is a piece of insulating material 220 on which are mounted two brushholders 224 and 225 each provided with their tension springs and brushescontacting collector rings 220 and 22|.

The operation of the magnetic coiling drum is as follows: The drum isexpanded, the electric supply passes through control switch 220 to itsterminal 221, conductor 220 to brush holder 22| and through its brush tocollector ring 22|, through conductor 222 to extendible contacts 2|1,2|8, 2|3 and 2|2, to contact terminals 200 of each segment, through theelectro-magnetic coils, and returning in a similar manner from eachsegment to collector ring 220brush and brush holder 225, conductor 230,to terminal 220 of control switch 226, completing the circuit andenergizing the electro-magnetic coils, and converting the entire surfaceof the drum into a magnet to which the leading end of the strip willadhere and be carried around the drum as it without its ow line beingdiverted, and no manual manipulation is necessary, thus avoidingextended or telescoped convolutions which usually occur when theVleading end of the strip has to be strip.

entered manually in a gripper slot. It is obvious that this magneticcoiling drum eliminates the belt-wrapper.

-As the leadingend of the strip will be attached to the magnetic coilingdrum equally well while it is rotating or when it is at rest it isobvious that it is not necessary to stop the mill or any other equipmentpreceding the magnetic coiling drum, as is the case when the drum isprovided with a gripper to hold the leading end of the strip. `After thecoil is completed the drum is collapsed as -previously described and thecoil is removed by my magnetic coil stripper Patent #2,198,644, or anyother means, after which the drum is expanded as previously describedand is ready to form the next coil.

In the various figures illustrating the collapsible-expanding coilingdrum, only three frustoconical surfaces are shown, but it is obviousthat the number can be reduced to two for very short drums or increasedto any desired number for long drums. It is also obvious that the angleof the truste-conical surfaces with relation to-their 1 axes can beincreased or decreased as desired,

thus regulating the tension in and sizey of the rod 35 which imparts thelongitudinal movement to the segments to produce thev collapse of alsoexpansion of the drum.

It is also obvious that the face width of the frusto-conical surfacescan be increased or decreased as desired, which,` in conjunction withthe number of these surfaces provided, will regulate and reduce to asafe margin the unit contact pressure between the drum core and thesegments, which is impossible in drums using rollers, cams, etc.

While only the frusta-conical surfaceA for collapsing and expanding thesegments has been described, it is obvious that the same results can beattained with frusto-pyramidal surfaces.

While the foregoing descriptions referred to magnetic collapsibleexpanding drums in connection with reducing mills, it is obvious thatthey are equally adaptable to any processing equip-- ment requiring.coiling of the strip, after the processing operation, and they areparticularly adaptable for coiling narrow strips which have been slitfrom a wider strip by a rotary slitting shear in a slitting line. Withthe known method it is impossible to enter a number of strips in thedrun gripper and at the same time keep them central, in line, and withthe same tension in each With the known type of coiling drums coilingseveral narrow strips side by side, which were slit from a wider strip,it is necessary'to stop all operations and to manually enter each narrowstrip in a gripper slot, which necessitates holding each and every oneof the narrow strips in the gripper while the succeeding narrow stri-pis entered before the gripper can be closed to grip the strips, afterwhich the slitting and coiling proceeds. This manual handling of theindividual narrow strips diverts them from their path of flow betweenthe slitting shear and coiling drum causcarried rby said shaft,

ing crooked entry of the strip in the gripper, and

some ofthe strips are entered deeper in the gripper than others causingdifferent tension in the' various strips. All of these difficulties makeit impossible to secure a uniform coil.

With the magnetic drums the narrow strips pass'side by side from theslitting shear in their regular path of flow onto the magnetic coilingdrum, without any manual handling or manipulation, and adhere to it andare carried around of the coil without'interruption of operations,l

and a perfect coil is formed from each strip.

If for any' reason the narrow strips are diverted from their path theycan be quickly aligned by stopping the slitting shear and precedingequipment as soon as any of the leading ends of the strips adhere to themagnetic drum. and continuing rotation of the drum. The strips beingheld stationary by the preceding equipment will cause the strip to slipon the drum while itis rotating, this producing equal tension in allstrips. If they are outof line there will be more tension in one side ofthe strip than in the other and as the slippage of the strip on therotating drum equalizes the tension in both sides of the strip,

- then pushed on the drum and the segments expanded holding the'coilfirmly when the uncoiling can proceed.

It is obvious that the objects of this invention as previously statedwill be accomplished by the equipment described.

' Certain preferred features of the invention have been hereinillustrated and described, it will be understood, however', that changesin the construction and operation of the parts may be made withoutdeparting either from the true spirit or scope of the invention. Thesevariations are to be determined from the apperi'ded claims.

What I claim is: Y 1.4 In a sheet rolling mill or other processingequipment, a sheet w' ding means comprising a rotatable overhung shaftand a collapsible drum rality of arcuate members loosely carried by saidshaft, means at each end of said mem-bers holding said members on saidshaft'for movement relative to said shaft, correlatedI means-carried bysaid shaft, said members and said holding means for effecting radialmovement-of said members simultaneous with longitudinal movement. meansat one end ofsaid shaft engaging the adjacent ends of said members forshifting said 'members longitudinally of said shaft, operating means forsaid shifting mans at the other end of said shaft, and a connectingmeans extending axially through said shaft connecting said operatingmeans with said shifting means.

2. In a sheet rolling mill or other processing equipment, a sheetwinding means including a rotatable sh'aft, means tionrthe extendedportion of said shaft having a plurality of collaredfrusto-conicalsurtaces, a plurality of transversely arcuate drum formingsegments formed with concave frusto-conical surfaces on the interiorthereof slidably engaging said collared surf-aces, a disc fonned withtapering annular shapedslots fixed to said shaft near the extended endthereof, transversely arcuate projections carried by said segmentsslidably engaging in said slots, an outwardly inclined extension carriedby the opposite end of each segment, a collar fixed to said shaft havingan annular reess in one face .thereof in which said extensions said drumincluding a plurotatably supporting said' shaft with an end thereof inan extended posimental members, a ring Sldably extend. a ring xed tosaid collar having a cylindrical and an internal frusto-conical bore inwhich said inclined extensions slidingly engage, said ring and discjointly holding said segments on said shaft and radially contractingsaid segments upon endwise movement of said segments in one directionwith relation to said shaft and means engaging through said shaftconnected with said segments for moving said segments endwise.

3. In a sheet rolling mill or other processing equipment -a sheetwinding means comprising a rotatable winding shaft, means supportingsaid shaft for rotation, said supporting means engaging said shaftadjacent one end and at an intermediate point to-thereby dispose theopposite end of said shaft in projecting relation from said supportingmeans, said projecting portion of said shaft having a plurality ofcollared frusto-conical surfaces, a cylindrical drum including aplurality of transversely arcuate drum forming segments having interiorcomplementary concave frusta-conical surfaces engageable with saidcollared surfaces for radially expanding said segments upon endwisemovement in one direction thereof with relation to said shaft, meansholding said segments on said shaft against rotary movement relative tosaid shaft while permitting v endwise movement thereof, an axiallyshiftable disc member slidingly carried by said shaft and engaging theadjacent ends of the segments for effecting endwise both directionsrelative to said shaft, and operating means fixed to said discmember andextending axially through said shaft.

4. In a sheet rolling mill or other processing equipment, a sheetwinding means comprising a rotatable winding shaft, means supportingsaid shaft for rotation, said supporting means engaging said shaftadjacent'one end and at an intermediate point to thereby dispose theopposite end of said shaft in projecting relation from said supportingmeans, a collapsible cylindrical drum on the projecting portion ofcluding a plurality of segmental members, complementary means carriedpartly by said shaft and partly by said segmental members for effectingradial movement simultaneous with longitudinal shifting of saidsegmental members. a disc disposed near the projecting end of said shaftand said segmental members, a collar fixed to 1, acent said shaf adjcarried by said collar. Said disc, collar and ring effecting radialcontracting of said segmental members on endwise movement thereof in onedirection with relation to said shaft, an axially shiftable disc on theprojecting end of said shaft engaging the adjacent ends of saidsegmental members for communicating endwise movement in both directionsthereto, said disc including means for limiting expansion of andmaintaining concentricity of the adjacent ends of the segmental members,the expansion of the opposite yends of said segments being limited bythe cylindrical bore of said ring, said ring and collar also'maintainingsaid opposite ends of said segmental members concentric to said shaft,op-

i erating means for producing endwise movement of said segmental membersengaging said shatfzt at the supported end thereof, and a rod connec ingsaid operating means to said axially shiftable disc, said connecting rodextending axially through said shaft.

5. In a sheet rolling millor other processing equipment, a sheet windingmeans including a rosaid shaft, said drum inmovement of said segments intion, a collapsible drum on the extended end of said shaft, said drumincluding a plurality of arcuate segments, said shaft and segmentshaving complementary inclined surfaces, said surfaces being angularlyinclined toward the shaft axis to effect radial expansion andcontraction of the segments simultaneous with longitudinal movementthereof with relation to said shaft, shifting means carried byI saidshaft engaging adjacent ends of said segments for effecting longitudinalmovement of said segmentspsaid segments 'being provided on bothlongitudinal edges thereof with interengaging means providing forreduced periphery whensaid segments are contracted, a springy arcuateplate attached to each segment overlapping said interengaging meanswhereby to form asmooth exterior surface when expanded, each plateslidingly engaging over an adjoining segment, operating means mounted onthe supported end of said shaft for producing longitudinal movement ofsegments, rod connecting means for communicating the longitudinalmovement of said operating means to said. segment shifting means, saidconnecting means extending axially through said shaft.

6. In a sheet rolling mill or other processing equipment, a. sheetwinding means comprising a sheet winding shaft, a plurality of drumforming segments on said shaft, means movably mounting said segments forcombined radial and longitudinal movement, a rod loosely mounted axiallyin said shaft, a segment shifting member attached to one end of saidrod. a rod shifting means rotatably carried by said` shaft and threadedonto said rod, and means for rotating said rod shifting means to therebyshift said segments from a collapsed to an expanded position.

'7. In a sheet rolling mill or other processing equipment, a sheetwinding means comprising a threaded onto said rod, said rod shiftingmeans the opposite end of said segincluding a clutch element threadedonto said rod, a second clutch` element correlated lwith said firstclutch element, and means for` shifting one of said clutch elementsrelative to the other element.

8. In a sheet rolling mill or other processing equipment, a sheet,winding means' comprising a sheet winding shaft, a plurality ofdrumforming segments on said shaft. means movably mounting said segments forcombined radial and longitudinal movement, a rod loosely mounted axiallyin said shaft, a segment shifting member attached to one end of saidrod, a rod shifting means rotatably carried by said shaft and threadedonto said rod, and means for rotating said rod shifting means includingcomplementary clutch elements and operating means connected with saidelements.

9. In a sheet rolling mill or other processing equipment, a sheetwinding means comprising a sheet winding shaft, a plurality of drumforming segments on said shaft, means movably mounting said segments forcombined radialV and longitudinal movement, a rod loosely mountedaxially in said shaft, a segment shifting member attached to one end ofsaid rod, a rod shifting means rotatably carried by said shaft andthreaded yonto said rod, means for rotating said rod shifting meansincluding driving means, electromagnetic clutching means, and opentingmeans connected with said' clutching means for coupling said drivingmeans with said rod shifting means. y

10. In a lsheet rolling mill or other processing equipment, a sheetwinding means comprising a sheet winding shaft, a plurality of drumforming segments on said shaft, means movably mounting said segments forcombined radial and 1ongitudinal movement, a rod loosely mounted axiallyin said shaft, a segment shifting member attached to one end of saidrod, a rod shifting 'means rotatably carried by said shaft and` threadedonto said rod, reversible means for rotating said rod shifting meansincluding electromagnetic clutching means and reversible driving meansconnected with said clutching means.

11. In a sheet rolling mill or other processingV attached to one end ofsaid rod, a rod shifting means rotatably carried by said shaft andthreaded ontosaid rod, a reversible electric motor for rotating said rodshifting means, electromagnetic clutching means for coupling said motorwith said rod shifting means, and means operatively connected with saidAmotor and said clutching means foi` limiting the shifting of said rod.

` 12. In a sheet rolling mill or other processing equipment, a sheetwinding shaft, a p1ura1ity of drum forming segments on said shaft, meansmovably mounting said segments for combined radial and longitudinalmovement, a rod loosely mounted axially in said shaft, a segmentshifting member attached to one end of said rod, a

gitudinal movement, a rod loosely mounted axially in said shaft, asegment shifting member attached to one end of said rod, a` rod shiftingmeans rotatably carried 'by said shaft and threaded onto said rod, meansfor rotating said rod shifting means including a clutch element carriedby said rod shifting means, a second clutch element, fluid actwted meansconnected with said second clutch element for shifting said secondelement relative to said first element, and electro-magnetic controllingmeans for said fluid actuated means.

14. In a sheet rolling mill or other processing equipment, a sheetwinding means comprising a sheet winding shaft, a plurality of drumforming segments on said shaft, means movably mounting said segments forcombined radial and longitudinal movement, a rod loosely mounted axiallyin said shaft, a segment shifting member 15. In a sheet rollingmill orother processing I equipment, a sheet winding means comprising a sheetwinding shaft, a plurality of drum forming segments on said shaft, meansmovably mountingl said segments for combined vradial and longitudinalmovement, a rod loosely mounted axially in said shaft, a segmentshifting member attached to one end of said rod, a rod shifting meansrotatably carried by said shaft and threaded onto said rod, and meansfor rotating said shifting member, said rod and shifting member being sodisposed relative to said shaft that all stresses tending to collapseo'r expand said segments are absorbed longitudinally by said shaft withsaid segments and rod shifting means moving as a unit. A

16. In a sheet rolling mill or other processing` equipment, ash'eetwinding means .comprising a sheet winding shaft, a plurality ofdrum forming segments on said shaft, means movably mounting saidsegments for combined radial and -longitudinal movement relative to saidshaft, a rod loosely mounted axially in said shaft, a segment shiftingmember attached to one end of said rod, a rod shifting means rotatablycarried by said shaft and threaded onto said rod, electric operatingmeans Afor rotating said rod shifting means independently of therotation of said shaft to thereby shift said segments from a collapsedto .an expanded position, coacting means carried by attached to one endof said rod, a rod shifting 1g said rod and said shaft for holding saidrod against rotary movement relative to said shaft while permittinglongitudinal movement 'of said rod, an electric control means for saidoperating means, and circuit making and breaking means connected withsaid control means carried by said rod shifting means and movablelengthwise of said shifting means for limiting the endwise movement ofsaid rod.

17. In a sheet rolling .mill or other processing equipment, a sheetwinding means comprising a sheet winding shaft, a plurality of drumforming segments on said shaft, means, movably mounting said segmentsfor combined radial and longitudinal movement relative to said shaft, arod -loosely mounted axially in said shaft, a segment shifting memberattached to one end'of said rod, a rod shifting means rotatably carriedby said shaft and threaded Vonto said rod, electric operating means forrotating said rod shifting means independently of the rotation of saidshaft 4to thereby shift said segments from a collapsed to an expandedposition, coacting means carried by`V said rod and said shaft forholding said rod against rotary movement relative to said shaft whilepermitting longitudinal movement of said rod, an electric control meansfor said operating means, said operating means includingelectro-magnetic clutching means connected with said control means andsaid rod shifting means, said control means including circuit makingandl breaking means operatively connected with said rod shifting meansfor limiting the endwise movement of said rod. c

. 18. In a sheet rolling mill or other processingequipment, a sheetwinding means comprising a sheet winding shaft, a plurality of drumforming segments on said shaft, means movably mounting said segments forcombined radial and longitudinal movement relative to said shaft, a rodloosely mounted axially in said shaft, a segment shifting memberattached to one end of said rod, a rodshifting means rotatably carried-rby said shaft and threaded onto said rod, electric operating means forrotating said rod shifting means independently of the rotation of saidshaft to thereby shift said segments from a collapsed to an expandedposition, coact'ng means carried by said rod and said shaft for holdingsaid rod against rotary movement relative to said shaft while permittinglongitudinal movement of said rod, an electric control means for saidoperating means, said operating means including a power member,electro-magnetic clutching means connected with said control means forcoupling said power member with said rod shifting means, said controlmeans including a, circuit making and breaking means, and means carriedpartly by said shaft and partly bysaid rod shifting means for movingsaid circuit making and` breaking means lengthwise of said shaft uponrotation of said shifting means relative to said shaft'.

19. In a sheet rolling mill or other processing equipment, a sheetwinding means comprising a rotatable overhung shaft and a collapsibledrum carried by said shaft, said drum including a plurality of arcuatemembers loosely carried by said shaft, means at each end of said membersholding said members on said shaft for movement relative to said shaft,correlated means carried by said shaft,said members and said holdingmeans for effecting radial movement of said members simultaneous withlongitudinal movement, means at one end of said shaft engaging theadjacent ends of said members for shifting said'V members longitudinallyof said shaft, a cylinder attached to the opposite end of said shaft, apiston slidable in said cylinder, means connecting said piston to saidshifting means, and pressure means connected to said cylinder foreffecting movement of said piston in a selected direction.

20. In a sheet rolling mill or other processing equipment, a sheetwinding means including a rotatable overhung sheet winding shaft,combined radially and longitudinally shiitable arcuate drum formingmembers carried by said shaft, correlated means carried partly by saidshaft and partly by said members for radially shifting said members uponlongitudinal movement thereof, means carried by each member partlyoverlapping an adjacent member whereby to form a smooth exterior surfacewhen said members are in extended position, a segment shifting meansslidable axially of said shaft and extending therethrough, and hydraulicmeans operatively"connected with said shifting means for longitudinallyshifting said members.

21. In a sheet rolling mill, a sheet winding means including a rotatableshaft for winding the sheet, combined radially and longitudinallyshiftable segments carried 4by said shaft, means slidable through saidshaft and coupled with an end of each segment for shifting said segmentslongitudinally of said shalt, correlated means carried partly by saidsegments and partly by said shaft for shifting said segments radiallysimultaneously with the longitudinal shifting ther eof, each segmenthaving a coil receiving channel therein, and electro-magnetic coilsseated in said 4channels to thereby magnetize said segments and effectadherence of the leading end of the sheet thereto to thereby wind thesheet about said segments upon rotation of said shaft.

22. In a sheet rolling mill, a sheet winding means comprising arotatable winding shaft, means supporting said shaft for rotation, saidsupporting means engaging said shaft adjacent one end and at anintermediate peint to thereby dispose the opposite end of said shaft inprojecting relation from said supporting means, a co1- lar fixed to saidshaft on the projecting portion thereof adjacent said supporting means,a collapsible cylindrical electro-magnetic winding drum mounted onsaidprojecting shaft portion, means releasably holdingsaid drum en saidshaft, contact members carried by the inner end of said drum,spring-pressed contact members carried by said collar engageable withsaid first contact members, and means connecting said second contactmembers to a source of yelectric current supply.

23. In a sheet rolling milll a sheet winding -means comprising arotatable winding shaft,

means supporting said shaft for rotation, said supporting means engagingsaid shaft adjacent one end and at an intermediate point to therebydispose the opposite end of said shaft in projecting relation from saidsupporting means, a collar fixed to said shaft on the projecting portionthereof adjacent said supporting means, a collapsible cylindricalelectro-magnetic winding drum mounted on said projecting'shaft portion,means releasably holding said drum on said shaft, contact memberscarried by the inner end of said drum, spring-pressed contact memberscarried by said cellar engageable with said first contact members, apair of spaced apart commutator rings carried by said collar, a pair ofbrushes engageable with said rings, and means supporting saidv brushesin contacting relation to said rings.

24. An electro-magnetic winding drum for use on a sheet winding shaftcomprising a collapsible cylindrical metallic body formed in the outersurface thereof with a plurality of longitudinal coil receivingchannels, electro-magnetic coils in said channels, means closing saidchannels, terminals counter-sunk in an end of said body and connected tothe ends of said coils, a vretaining ring at one end of said bodyoverlapping a portion of the latter, and spring pressed contacts carriedby said ring engageable with said terminals.

25. In a sheet rolling mill or other processing equipment, a sheetwinding means including a rotatable shaft, a plurality of elongatedsegments, means mounting said segments on said shaft for combinedendwise and radial movement relative to said shaft, an arcuate inwardlyprojecting flange carried by one end of each segment, a segment shiftingrod slidable through said shaft. means fixed relative to an end of saidrod and engageable on opposite sides of said flanges whereby saidsegments will be shifted endwise with endwise movement of said rod,means fixed relative to said shaft and engageable with said segmentsadjacent the opposite ends thereof for slidably holding said segments intheir radially land longitudinally adjusted positions, and means forshifting said rod lengthwise of said shaft.

26. In a sheet rolling mill or other processing equipment, a sheetwinding means including a rotatable shaft, a plurality of elongated.segments, means mounting said segments on said shaft for combinedendwise and radial movement relative to said shaft, an arcuate inwardlyprojecting flange carried by one end of each segment, a segment shiftingrod slidable through said shaft, means fixed relative to an end of saidrod and engageable ,on opposite sides of said flanges whereby 'saidsegments will be shifted endwise with endwise movement of said rod, apair of oppositely extending slide members carried by each segment onevadjacent each end thereof, guide means for said slide members xed tosaid shaft, and means for shifting said rod lengthwise of said shift. A

27. In a sheet rolling mill or other processing equipment, a sheetwinding means including a rotatable shaft, a plurality of elongatedsegments, means mounting said segments on said shaft for combinedendwise and radial movement .relaive to said shaft, an arcuate inwardly.projecting flange carried by one endof each segment, a segment shiftingrod slidable through said shaft, means xed relative to an end of saidrod and engageable on opposite sides of said flanges whereby saidsegments will be shifted endwise with endwise movement `of said rod, apair of j oppositely extending slide members carried by each segment oneadjacent each endy thereof, annular arcuately slotted collars fixed tosaid shaft and constituting guide means for said slide members, andmeans for shifting saidv rod lengthwise of saidshaft.`

28. In a sheet rolling mill or other processing equipment, a sheetwinding means including a rotatable shaft, a plurality of elongatedtransversely arcuate segments about said shaft, means mounting saidsegments for combined-endwise and lradial movement relative to saidshaft, an

- arcuate inwardly projecting flange carried by one end of each segment,obtusely disposed oppositely extending slide means fixed to the oppositeends of each segment, guide means for said slide means fixed to saidshaft, a segment shifting rod slidable axially through said shaft, areduced axial stub carried by said shaft, an annular plate fixed to saidrod, an annular flange carried by said plate slidably engaging saidstub, a second flange carried by said plate engageable about theadjacent ends of saidl segments and constituting a limiting means forlimiting the expansion of said segments, a flanged ring fixed to saidplate and engageable against the inner sides of said arcuate segmentfianges whereby axial movement i extending slide means fixed to theopposite ends of each segment, guide means for said slide means fixed tosaid shaft, a segment shifting rod slidable axially through said shaft,a reduced axial stub carried by said shaft, an annular plate fixed tosaid rod, an annular ange carried by said plate A slidably engaging saidstub, a second fiange carried by said plate engageable about theadjacent ends of saidsegments and constituting a limiting means forlimiting the expansion of said segments, a anged ring fixed to saidplate and enmeans holding said rod against rotary movement relative tosaid shaft.

30. In a sheet rolling mill, a sheet winding means including a rotatableshaftfor winding the sheet, radially and longitudinally shiftablesegments carried by said shaft, means for .simul- `means including arotatable shaft for winding the sheet, radially and longitudinallyshiftable segments carried by said shaft, correlated means carried bysaid shaft and said segments for radially shifting said segments uponlongitudinal movement thereof, means extending through said shaft andengaging an end of each segment for shifting the latterflongitudinally,a retaining ring fixed to said shaft and overlapping the opposite endsof said segments, means for magnetizing said segments, electricconducting means for energizing said magnetic means terminating in fixedterminals insaid opposite ends of segments, springpressed contact meansin saidring engageable with and maintaining contact against said fixedterminals in said opposite ends when said segl ments are shiftedlongitudinally and radially.

- 32. In a sheet rolling mill, a sheet winding means including arotatable shaft for winding the sheet, drum forming segments about saidshaft, correlated means carried by said shaft and said segments forradially shifting said segments upon longitudinal movement of thelatter, electromagnetic means carried by said segmentsfor releasablyholding a ferrous sheet thereon, means extending through said shaftconnected to the ends of said segments at vone end of the drum forshifting said segments longitudinally of said shaft independent of therotation of said shaft, longi- 'I tudinal extensions at the oppositeends of each segment, and means fixed relative to said shaft engagingsaid extensions for holding said segments about said shaft. 1

33. In a sheet rolling mill, a sheet winding means including alrotatable supporting shaft, a collapsible drum carried by said shaft,said drum including radially and longitudinally shiftable segments,correlated means carried by said shaft and saidsegments for shiftingsaid segments radially upon longitudinal shifting thereof, a rodextending axially through said shaft, correlated means carried by oneend of said rod and said segments for shifting said segmentslongitudinally with longitudinal movement of said rod, a rod operatorrotatably carried by 'said shaft, correlated means carried by said rodand saidv operator for shifting said rod longitudinally of said shaft,said latter means being so constructed and arranged as to lock said rodin adjusted position, locking of said rod also locking said segments inextended or contracted position, and means for rotatingsaid operator,

gageable against the inner sides of said arcuate segment flanges wherebyaxial movement of said 34. In a sheet rolling mill, a sheet windingmeans including a rotatable supporting shaft, a collapsibledrum carriedby said shaft, a drum collapsing and extending rod extending axiallyvthrough said shaft, correlated means carried by oneend of said rod andsaid drum for positively moving said drum to extended or collapsedposition upon endwise movement of said rod, meansl holdinglsaid 'rodagainst rotary movement relative to said shaft, threads carried by theopposite end of said rod, a rod operator threadably engaging saidthreads, means rotatably mounting said operator on said shaft, and meansfor rotating said operator independently of said shaft to thereby movesaid rod endwise in a selected direction.

35, In a sheet rolling mill, a sheet winding means including a rotatablesupporting shaft formed with spaced inclined surfaces, a collapsiendthereof.

ble drum formed of a plurality of segments carried by said shaft, saidsegments having inclined surfaces contacting with said first surfaces, adrum collapsing and extending rod disposed `axially of said shaft, meansslidably holding said rod against rotary movement relative to saidshaft, means fixed to said rod engaging the adjacent ends of saidsegments for positively shifting said segments endwise upon endwisemovement of said rod in a selected direction, and means for moving saidrod endwise to ,thereby extend or retract said drum.

36. In a sheet rolling mill ornother processing equipment, a sheetwinding means including a rotatable overhung shaft for winding thesheet, combined radially and longitudinally shiftable segments carriedby said shaft forming a cylin- 3'?` In a sheet rolling mill, a sheetwinding means including a rotatable supporting shaft, a collapsible drumcarried by said shaft, said drum including radially and longitudinallyshiftable segments, said shaft and said segments having cooperatingsurfaces so constructed and arranged that endwise movement of saidsegments will provide simultaneous radial movement of the latter',

correlated means carried by said shaft and saidv segments for shiftingsaid segments radially upon longitudinal shifting thereof, a rodextending axially through said shaft, correlated means carried 'by oneend of said rod and said segments for shifting said segmentslongitudinally with longitudinal movement of said rod, a rod operatorrotatably carried by said shaft and correlated means carried by said rodand said operator for shifting said rod longitudinally of said shaft,said operator being so constructed and arranged as to lock said rod inadjusted position, locking of said rod also locking said segments inextended or contracted position.

FRANK L. WETTENGEL.

